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Kao Patents Deodorant Particle

January 24, 2013

US Patent No. 8,298,520 B2; Kao Corporation, Tokyo, has patented a deodorant particle having a BET specific surface area of 10m2/g or more that is obtained by copolymerizing monomers comprising a crosslinkable vinyl monomer and a vinyl monomer having a heteroaromatic ring. The deodorant particle further contains a metal ion. A proportion of the crosslinkable vinyl monomer in the monomer system is from 20 to 98% by mass. The crosslinkable vinyl monomer is selected from the group consisting of divinylbenzene, trivinylbenzene and ethylene glycol di(meth)acrylate, and wherein the vinyl monomer having a heteroaromatic ring is selected from the group consisting of 2-vinylpyridine, 4-vinylpyridine, 1-vinylimidazole and 2-vinylpyrimidine.
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